Oscar Answer #6

Oscar Answer No. 6
That’s Barry Fitzgerald (right, with Bing Crosby and Rise Stevens), who received best actor and best supporting actor nominations for his role as the cranky but golden-hearted elderly priest in Leo McCarey’s syrupy Going My Way (1944). Fitzgerald lost the best actor Oscar to Bing Crosby, the official star of Going My Way, but won the best supporting actor award.
Academy rules were then changed to prevent any more double nominations for the same role.
Other performers who have been nominated in the same year, but for different films, are:

Fay Bainter in 1938 (lead in White Banners, supporting in Jezebel);
Teresa Wright in 1942 (lead in The Pride of the Yankees, supporting in Mrs. [...]

Best Films – 1944

John Hodiak, Tallulah Bankhead in Lifeboat

FILM
I Bambini ci guardano / The Children Are Watching Us
d: Vittorio De Sica; scr: Cesare Zavattini, Vittorio De Sica, Cesare Giulio Viola, Adolfo Franci, Margherita Maglione, Gherardo Gherardi
Crime by Night
d: William Clemens; scr: Joel Malone, Richard Weil
Dragon Seed
d: Harold S. Bucquet, Jack Conway; scr: Jane Murfin, Marguerite Roberts
Laura
d: Otto Preminger; scr: Jay Dratter, Samuel Hoffenstein, Betty Reinhardt
Lifeboat
d: Alfred Hitchcock; scr: Jo Swerling
Mr. Skeffington
d: Vincent Sherman; scr: Julius J. Epstein, Phillip G. Epstein
This Happy Breed
d: David Lean; scr: Anthony Havelock-Allan, David Lean, Ronald Neame
The Uninvited
d: Lewis Allen; scr: Dodie Smith
 

Jennifer Jones, Robert Walker, Joseph Cotten in Since You Went Away
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Arsenic and Old Lace
d: Frank Capra; scr: Julius J. Epstein, Phillip G. Epstein
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